Mold with optimized heat transfer properties

1. A mold for the production of confectionery products, comprising

a top surface having cavities and an opposite bottom surface, comprising

a plurality of protruding elements at the bottom surface of the mold, and opposite at least one of the cavities, for increasing the heat transfer rate between the mold and a fluid flowing along the bottom surface, wherein at least some of the protruding elements are at non-parallel angles relative to others of the protruding elements;

wherein at least some protruding elements are arranged in blocks, extending from one side face having openings to the other side face having openings, and separated by strengthening ribs, in a direction parallel to the fluid flow.

2. The mold according to claim 1 , further comprising at least one side face in which at least one opening is provided for supplying a fluid to the bottom surface, at least one opening preferably being provided in each of two opposing side faces of the mold.

3. The mold according to claim 1 , further comprising at least one opening in the top surface of the mold.

4. The mold according to claim 1 , wherein the protruding elements are configured to generate vortices in the fluid flowing along the bottom surface and preferably to change the fluid flow characteristics along the mold by effecting a more turbulent flow of the fluid.

5. The mold according to claim 1 , wherein one or more of the protruding elements are arranged to provide angularly offset portions relative to a direction parallel to the fluid flow between the side faces.

6. The mold according to claim 5 , wherein the offset portions are oriented according to either one of the two offset angles relative to a direction parallel to the fluid flow.

7. The mold according to claim 5 , wherein at least some protruding elements are arranged in alternating diverging and converging opposing pairs extending from one side face having openings to the other side face having openings, the alternating divergence and convergence being along a direction parallel to the fluid flow.

8. The mold according to claim 1 , wherein at least some protruding elements are arranged in blocks and the offset portions are oriented according to either one of two offset angles relative to a direction parallel to the fluid flow.

9. The mold according to claim 1 , wherein one or more protruding elements are configured to guide the fluid flow along the bottom surface of said mold.

10. The mold according to claim 1 , wherein the fluid is cooling air or heating air.

11. The mold according to claim 1 , wherein the mold is at least partially made of polycarbonate.

12. The mold according to claim 1 , further comprising at least one temperature sensor and a logger.